Annual report pursuant to Section 13 and 15(d)

Goodwill and intangible assets - Additional Information (Detail)

Goodwill and intangible assets - Additional Information (Detail) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Developed technology \| Cost of Sales
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 3,000,000	$ 890,000.0	$ 435,000.0
Trade Names Customer Relationships and Noncompete Agreement \| Selling, General and Administrative Expense
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 2,100,000	$ 574,000.0	$ 525,000.0

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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